I had just started to play guitar when I saw them in '77, so I was all set to fix my attention almost exclusively on Page during the show. That lasted for about 3 to 4 songs, after which my attention was inexorably drawn to Bonham. A musician who exuded more power there never was, at least none that I've seen. Tone, power, technique, timing, ....gravitas (I hesitate to say) ....he had it all.
Well said. Bonham was definately that. Just about every musician on the rock scene thought Bonham was in a class by himself. His sound was incredible and impossible to reproduce.